Buildah : Create images from Scratch |
Create container images from an empty container image. | |
| [1] | Start to create with [scratch] image. |
# create an empty container with [scratch] root@dlp:~# newcontainer=$(buildah from scratch) root@dlp:~# buildah containers CONTAINER ID BUILDER IMAGE ID IMAGE NAME CONTAINER NAME e9f9b36a6e56 * 047bd8d81940 docker.io/library/debian:latest debian-working-container b1bd18cfd87d * 047bd8d81940 docker.io/library/debian:latest debian-working-container-1 7596c7a60413 * scratch working-container # mount [scratch] container root@dlp:~# scratchmnt=$(buildah mount $newcontainer) root@dlp:~# echo $scratchmnt /var/lib/containers/storage/overlay/9fb5c06eacfc5a84e11567194fe907b80843d4a0ec731848aaeb4f8291937eeb/merged # install packages to [scratch] container root@dlp:~# apt -y install debootstrap root@dlp:~# debootstrap trixie $scratchmnt # unmount root@dlp:~# buildah umount $newcontainer 7596c7a6041388e860cfc19cf1e3eb37889acb7f28cf1ede5b213b30dfdc5bc4 # run container root@dlp:~# buildah run $newcontainer cat /etc/os-release PRETTY_NAME="Debian GNU/Linux 13 (trixie)" NAME="Debian GNU/Linux" VERSION_ID="13" VERSION="13 (trixie)" VERSION_CODENAME=trixie DEBIAN_VERSION_FULL=13.0 ID=debian HOME_URL="https://www.debian.org/" SUPPORT_URL="https://www.debian.org/support" BUG_REPORT_URL="https://bugs.debian.org/" # add images root@dlp:~# buildah commit $newcontainer debian-basic:latest Getting image source signatures Copying blob 1cee239fdfc0 done | Copying config 8d1a03f855 done | Writing manifest to image destination 8d1a03f8551180ec205441df6d6f26c1df0e17cd9c4b90a0bf43196b895cf71broot@dlp:~# buildah images REPOSITORY TAG IMAGE ID CREATED SIZE localhost/debian-basic latest 8d1a03f85511 17 seconds ago 307 MB dlp.srv.world:5000/my-debian latest 77fd1e5643fd 6 minutes ago 187 MB localhost/my-debian latest 77fd1e5643fd 6 minutes ago 187 MB docker.io/library/debian latest 047bd8d81940 11 days ago 124 MB # test to run a container root@dlp:~# podman run localhost/debian-basic /bin/echo "Hello my debian" Hello my debian |
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